Two questions on acceleration and an experiment

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Gravitational acceleration of 9.82 m/s² means that an object in free fall increases its velocity by 9.82 meters per second for each second of descent. For example, if someone jumps from a plane with an initial velocity of 0 m/s, after 200 seconds, their velocity would be approximately 2000 m/s upon reaching the ground. The discussed experiment involves a wagon moving down a hill, where a spring releases a ball that lands back in the wagon, illustrating the independence of horizontal and vertical motion. This experiment does not have a specific name but effectively demonstrates Newton's laws of motion. Understanding these concepts is crucial for grasping fundamental physics principles.
skywoo
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Hi.

First post here and not a native english speaker, so be kind :-)

1) I have never really understood what it means when we say that the gravitation accelerations is 9,82 m/s2

What is the practical use. Could anyone tell me with a simple example. I think the confusing part is the s2.

2) I have seen an experiment relating to one of Newtons laws which consitet of a wagon moving down a hill. At some point a spring on the wagon was released which made the ball flying and landing in the wagon (which had already moved). Does this experiment have a name?

Thanks in advance. I hope you can help :-)
 
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It means that, for every second you are in free-fall, your velocity towards the Earth increases by 9.8 meters per second. If I jump from a plane with a velocity of 0 meters per second, and it takes me 200 seconds to reach the ground, my velocity will be about 2000 meters per second when I reach the ground.

It doesn't have a name as far as I know of. It's demonstrating that the velocity in the X direction is independent of that in the Y direction.
 
Thank you! Helped a lot.
 

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